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Finding the Fourth Proportional to 315,274,429.80, 472,911,644.70 and 315,274,429.80

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Solution

The fourth proportional to 315,274,429.80, 472,911,644.70 and 315,274,429.80 is: 472,911,644.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,274,429.80 : 472,911,644.70 = 315,274,429.80 : x
  2. Step 2: Convert to fraction form
    315,274,429.80/472,911,644.70 = 315,274,429.80/x
  3. Step 3: Cross multiply
    315,274,429.80x = 472,911,644.70 × 315,274,429.80
  4. Step 4: Simplify right side
    315,274,429.80x = 149,096,949,128,572,704
  5. Step 5: Solve for x
    x = 149,096,949,128,572,704/315,274,429.80
  6. Step 6: Final answer
    x = 472,911,644.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.